<?php

/**
 * This is the model class for table "class_info".
 *
 * The followings are the available columns in table 'class_info':
 * @property string $id
 * @property string $class_name
 * @property string $year_month
 */
class ClassInfo extends CActiveRecord
{
	/**
	 * Returns the static model of the specified AR class.
	 * @return ClassInfo the static model class
	 */
	public static function model($className=__CLASS__)
	{
		return parent::model($className);
	}

	/**
	 * @return string the associated database table name
	 */
	public function tableName()
	{
		return '{{class_info}}';
	}

	/**
	 * @return array validation rules for model attributes.
	 */
	public function rules()
	{
		// NOTE: you should only define rules for those attributes that
		// will receive user inputs.
		return array(
			array('class_name', 'required'),
			array('class_name', 'length', 'max'=>10),
			array('year_month', 'length', 'max'=>6),
			// The following rule is used by search().
			// Please remove those attributes that should not be searched.
			array('id, class_name, year_month', 'safe', 'on'=>'search'),
		);
	}

	/**
	 * @return array relational rules.
	 */
	public function relations()
	{
		// NOTE: you may need to adjust the relation name and the related
		// class name for the relations automatically generated below.
		return array(
		);
	}

	/**
	 * @return array customized attribute labels (name=>label)
	 */
	public function attributeLabels()
	{
		return array(
			'id' => 'ID',
			'class_name' => '班级名称',
			'year_month' => '年月',
		);
	}

	/**
	 * Retrieves a list of models based on the current search/filter conditions.
	 * @return CActiveDataProvider the data provider that can return the models based on the search/filter conditions.
	 */
	public function search()
	{
		// Warning: Please modify the following code to remove attributes that
		// should not be searched.

		$criteria=new CDbCriteria;

		$criteria->compare('id',$this->id,true);
		$criteria->compare('class_name',$this->class_name,true);
		$criteria->compare('year_month',$this->year_month,true);

		return new CActiveDataProvider(get_class($this), array(
			'criteria'=>$criteria,
		));
	}
	
	/**
	 * get all classInfo from DB and list the data through a method listData in CHtml class, the return is an Array
	 * for display use I use foreach here to generate a nice name for user
	 * 
	 * @return array $arrXXXX[1]=>'className(yearmonth)' ...
	 */
	public function getClassInfoList()
	{
	    $classResult = ClassInfo::model()->findAll(' 1=1 ORDER BY id DESC');
	    foreach ($classResult as $class)
	        $arrClassReturn[$class['id']] = $class['class_name'].'('.$class['year_month'].')';
//	    return CHtml::listData($classResult, 'id', 'class_name year_month');
      return $arrClassReturn;
	}
}